<!doctype html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>外部样式</title>
		<!-- 通过link标签引入外部文件，外部文件的样式就会作用于当前页面 -->
		<link rel="stylesheet" href="css/index.css">
	</head>
	<body>
		<div>
			<p>段落</p>
		</div>
	</body>
</html>
